427 BBC pistons closed chamber ideas or?

[sean1970ss]

Originally Posted by Alan Roehrich

Application?


Goal?

Drag/Street deal for an old car I have with a 5 speed liberty. Make as much HP N/A Old idea I have had for a long time high RPM motor. Thank you Alan!! Sean

[Alan Roehrich]

Originally Posted by sean1970ss

Drag/Street deal for an old car I have with a 5 speed liberty. Make as much HP N/A Old idea I have had for a long time high RPM motor. Thank you Alan!! Sean

Pump gas? Race gas? Roller cam? How fast are you trying to go?


Most all of the "shelf stock" pistons are going to be for the stock for. They're going to have a 1/16", 1/16", 3/16" ring package. You could have something made, Vic Ellenger at Wiseco will hook you up.

[sean1970ss]

Originally Posted by Alan Roehrich

Pump gas? Race gas? Roller cam? How fast are you trying to go?


Most all of the "shelf stock" pistons are going to be for the stock for. They're going to have a 1/16", 1/16", 3/16" ring package. You could have something made, Vic Ellenger at Wiseco will hook you up.

Alan,

E-85 Roller cam, I would be stoked to be in the mid to low 9's or in the 5's eight mile. Local we just have 1/8th 1/4 is over 5 hours since HRP is gone. I really appreciate your insights. I can post up my cam specs to. Would I be better off with a open chamber head? 990 or 088?

[Alan Roehrich]

Originally Posted by sean1970ss

Alan,

E-85 Roller cam, I would be stoked to be in the mid to low 9's or in the 5's eight mile. Local we just have 1/8th 1/4 is over 5 hours since HRP is gone. I really appreciate your insights. I can post up my cam specs to. Would I be better off with a open chamber head? 990 or 088?

An open chamber head will flow better. But you can make big power with a closed chamber head.



Cam specs might help.


How much HP do you need to achieve your goal?

[Stan Weiss]

Originally Posted by Alan Roehrich

An open chamber head will flow better. But you can make big power with a closed chamber head.



Cam specs might help.


How much HP do you need to achieve your goal?

I will ask this question a different way. What is the race weight with you in it for you vehicle?


Stan

[sean1970ss]

Originally Posted by Stan Weiss

I will ask this question a different way. What is the race weight with you in it for you vehicle?


Stan

Stan,

3400lb sir with my skinny butt in it LOL.

[Alan Roehrich]

Originally Posted by sean1970ss

Stan,

3400lb sir with my skinny butt in it LOL.

So you need a solid 750-770HP. To be honest, that will not be easy with a 427, You're going to need a 288/298/108 or so cam and at least an 850 carburetor, and that assumes a good intake and heads. Rod length will not make a difference, you'll need about 12.25:1 compression. You're going to end up with what amounts to an average Super Stock engine, but you can use a better carburetor and get there easier. You could use any good shelf stock closed chamber 427 piston. Should be able to get one from Wiseco or JE, for sure.